Silencenon-silence discrimination apparatus

专利名称：Silence/non-silence discrimination apparatus发明人：Akamine, Masami, c/o Intellectual Property

Div.

申请号：EP90301081.7申请日：19900201公开号：EP0381507A2公开日：19900808

专利附图：

摘要：A speech signal is input to an LPC cepstrum calculator (51) and the LPCcepstrums of the speech signal for each frame are calculated as characteristicparameters. The cepstrum is input to a characteristic parameter projection circuit (54)

including an inner product calculator (53) and a memory (52) storing first to third prioritycomponent vectors that are obtained by applying a priority component analysis to theLPC cepstrums of the non-silent parts of the speech. The inner product calculator (53)calculates inner products of the cepstrum vector and the priority component vectorsstored in the priority component vector memory (52) to obtain a projected point of theLPC cepstrums in a vector space formed by the first to third priority component vectors.The output of the inner product calculator (53) is supplied to a silence/non-silencediscriminator (56) to which a non-silent region parameter memory (55) storingparameters defining a non-silent region in the non-silent priority component vectorspace. The silence/non-silence discriminator (56) determines if the speech is silent or non-silent based on whether the projected point is within the non-silent region.

申请人：KABUSHIKI KAISHA TOSHIBA

地址：72, Horikawa-cho, Saiwai-ku Kawasaki-shi, Kanagawa-ken 210 JP

国籍：JP

代理机构：Freed, Arthur Woolf

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